16,616,421

3⁴ × 205141

16,616,421 factors as 3^4 × 205141. Its 10 positive divisors give a proper-divisor sum of 8,205,761, so this integer is deficient. The Collatz stopping time is 138 steps.

Prime Factor Structure

Factorization String 3^4 × 205141

Distinct Prime Factors 2

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 10

Divisor Sum (σ) 24,822,182

Proper Divisor Sum 8,205,761

Digit Sum / Digital Root 27 (Root: 9)

Adjacent Primes #16616417 ← → #16616423

Radix Representation

Decimal	16616421
Binary	111111011000101111100101 (24 bits)
Octal	0o77305745
Hexadecimal	0xFD8BE5

Divisor Catalog (10)

1 3 9 27 81 205,141 615,423 1,846,269 5,538,807 16,616,421

Collatz Trajectory (138 steps to reach 1)

Iterative sequence n → n/2 (if even) or 3n+1 (if odd):

16,616,421 49,849,264 24,924,632 12,462,316 6,231,158 3,115,579 9,346,738 4,673,369 14,020,108 7,010,054 3,505,027 10,515,082 5,257,541 15,772,624 7,886,312 3,943,156 1,971,578 985,789 2,957,368 1,478,684 739,342 369,671 1,109,014 554,507 1,663,522 831,761 2,495,284 1,247,642 623,821 1,871,464 935,732 467,866 233,933 701,800 350,900 175,450 87,725 263,176 131,588 65,794 32,897 98,692 49,346 24,673 74,020 37,010 18,505 55,516 27,758 13,879 41,638 20,819 62,458 31,229 93,688 46,844 23,422 11,711 35,134 17,567

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